In order to know the true situation of a Planet at any particular time, the small set of balls are to be put each on its respective axis; then the winch to b...

In order to know the true situation of a Planet at any particular time, the small set of balls are to be put each on its respective axis; then the winch to be turned round until each index points to the given time.

quote by David Rittenhouse
Submitted by Lucian Velea
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